Inflation adjusted the 1B (with 512MB, which was the only available variant) was slightly more expensive than the 5 with 2GB at their respective release. The price "increase" is that 4 and 8GB models are available at all and most people buy them, presumably because people actually don't care about the purchase price so much. But you still get the cheapest variant, if you really want to. Also, there are different variants of the Zero, all of which are cheaper than the 1A at release.

The power brick got more expensive due to the increased power use. Also if you want to make use of the full power, you need a cooler. But you can also do without cooler, because it just gracefully slows down when overheated.

I think the Pi drove the price of lower end computers down so far that people completely lost their sense of perspective.